FastAPI Updates & Release Notes
49 updates curated from 1 source by the Releasebot Team. Last updated: Jul 30, 2026
- Jul 29, 2026
- Date parsed from source:Jul 29, 2026
- First seen by Releasebot:Jul 30, 2026
0.141.1
FastAPI fixes app.frontend() background tasks and dependency headers, plus documents FASTAPI_ENV in the CLI guide.
Fixes
š Fix support for background tasks and headers from dependencies in app.frontend(). PR #16105 by @tiangolo.
Docs
š Document FASTAPI_ENV in FastAPI CLI guide. PR #16104 by @tiangolo.
Original source - Jul 29, 2026
- Date parsed from source:Jul 29, 2026
- First seen by Releasebot:Jul 30, 2026
0.141.0
FastAPI adds app.frontend(check_dir="auto") to make local development more convenient with fastapi dev.
Features
āØ Add app.frontend(check_dir="auto"), to make local development more convenient with fastapi dev. PR #16102 by @tiangolo.
Original source All of your release notes in one feed
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- Jul 28, 2026
- Date parsed from source:Jul 28, 2026
- First seen by Releasebot:Jul 29, 2026
0.140.13
FastAPI fixes SSE and JSONL streaming status codes and improves SSE docs and API reference.
Fixes
š Fix status_code being ignored for SSE and JSONL streaming endpoints. PR #15937 by @SAURABHSALVE.
Docs
š Fix format_sse_event docstring rendering of \n\n terminator. PR #15613 by @AshNicolus.
š Add API reference page for fastapi.sse. PR #15930 by @SAURABHSALVE.
Original source - Jul 28, 2026
- Date parsed from source:Jul 28, 2026
- First seen by Releasebot:Jul 29, 2026
0.140.12
FastAPI fixes SSE line splitting in format_sse_event to comply with the SSE spec.
Fixes
š Fix line splitting in format_sse_event to comply with SSE spec. PR #15515 by @Zawwarsami16.
Original source - Jul 28, 2026
- Date parsed from source:Jul 28, 2026
- First seen by Releasebot:Jul 29, 2026
0.140.11
FastAPI fixes response_model_* params ignored for non-generator endpoints with Iterable return types.
Fixes
š Fix response_model_* params ignored for non-generator endpoints with Iterable[..] return type. PR #15093 by @YuriiMotov.
Original source Similar to FastAPI with recent updates:
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- Jul 28, 2026
- Date parsed from source:Jul 28, 2026
- First seen by Releasebot:Jul 29, 2026
0.140.10
FastAPI fixes nested Annotated sequence handling and improves regression checks and pytest exit code preservation.
Fixes
š Fix handling sequences with nested Annotated types. PR #14874 by @YuriiMotov.
Internal
š Accept any base test failure as regression. PR #16092 by @tiangolo.
š Preserve pytest exit code in regression check. PR #16091 by @tiangolo.
ā Test PR regressions against base code. PR #16090 by @tiangolo.
Original source - Jul 28, 2026
- Date parsed from source:Jul 28, 2026
- First seen by Releasebot:Jul 29, 2026
0.140.9
FastAPI fixes jsonable_encoder exclude_defaults propagation and updates a few internal dependencies.
Fixes
š Fix exclude_defaults not propagated to dict keys and values in jsonable_encoder. PR #16043 by @MBGrao.
Internal
ā¬ Bump gitpython from 3.1.50 to 3.1.54. PR #16047 by @dependabot[bot].
ā¬ Bump pymdown-extensions from 10.21.3 to 11.0. PR #16048 by @dependabot[bot].
ā¬ Bump pyasn1 from 0.6.3 to 0.6.4. PR #16045 by @dependabot[bot].
Original source - Jul 28, 2026
- Date parsed from source:Jul 28, 2026
- First seen by Releasebot:Jul 29, 2026
0.140.8
FastAPI fixes stream item type loss when using include_router().
Fixes
š Fix stream item type lost when using include_router(). PR #15077 by @alex-raw.
Original source - Jul 27, 2026
- Date parsed from source:Jul 27, 2026
- First seen by Releasebot:Jul 28, 2026
0.140.7
FastAPI refactors OpenAPI dependency handling and adds dependency benchmarks while upgrading latest-changes.
Refactors
ā”ļø Avoid flattening dependencies for OpenAPI. PR #16076 by @tiangolo.
Internal
ā¬ļø Upgrade latest-changes to 0.7.1. PR #16077 by @tiangolo.
š· Add OpenAPI dependency benchmarks. PR #16075 by @tiangolo.
Original source - Jul 27, 2026
- Date parsed from source:Jul 27, 2026
- First seen by Releasebot:Jul 28, 2026
0.140.6
FastAPI refactors request parameter dependencies to avoid flattening them for OpenAPI.
Refactors
ā”ļø Avoid flattening dependencies for request parameters, mainly for OpenAPI. PR #16073 by @tiangolo.
Original source - Jul 27, 2026
- Date parsed from source:Jul 27, 2026
- First seen by Releasebot:Jul 28, 2026
0.140.5
FastAPI refactors dependency handling to avoid flattening dependencies for body fields.
Refactors
ā”ļø Avoid flattening dependencies for body fields. PR #16071 by @tiangolo.
Original source - Jul 27, 2026
- Date parsed from source:Jul 27, 2026
- First seen by Releasebot:Jul 28, 2026
0.140.4
FastAPI refactors skip-unused-dependency repeat bookkeeping for cleaner dependency handling.
- Jul 27, 2026
- Date parsed from source:Jul 27, 2026
- First seen by Releasebot:Jul 28, 2026
0.140.3
FastAPI refactors OpenAPI to avoid repeated dependency flattening and improve performance.
Refactors
ā”ļø Avoid repeated dependency flattening in OpenAPI. PR #16067 by @tiangolo.
Original source - Jul 27, 2026
- Date parsed from source:Jul 27, 2026
- First seen by Releasebot:Jul 28, 2026
0.140.2
FastAPI refactors dependency tree handling and adds a new memory benchmark.
Refactors
ā”ļø Stop retaining flat dependency trees. PR #16065 by @tiangolo.
Internal
š· Add new memory benchmark. PR #16064 by @tiangolo.
Original source - Jul 27, 2026
- Date parsed from source:Jul 27, 2026
- First seen by Releasebot:Jul 28, 2026
0.140.1
FastAPI refactors lru_cache dependency limits to better support large apps.
Refactors
ā»ļø Update the lru_cache limit for dependencies to account for large apps. PR #16062 by @tiangolo.
Original source
Curated by the Releasebot team
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